湖北兴山发现霍氏缺齿鼩
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作者单位:

① 中国科学院植物研究所,植被与环境变化国家重点实验室 北京 100093;② 中国科学院大学 北京 100049; ③ 广州大学生命科学学院/华南生物多样性与利用重点实验室 广州 510006; ④ 中国环境科学研究院,国家环境保护区域生态过程与功能评估重点实验室 北京 100012; ⑤ 湖北省兴山县国有龙门河林场 兴山 443700;⑥ 三峡大学生物与制药学院 宜昌 443002

基金项目:

国家自然科学基金项目(No. 31700408),湖北省兴山县哺乳动物多样性调查与评估项目,生态环境部生物多样性调查、观测与评估项目(No. 2019HB2096001006)

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    摘要:

    2016年12月,在湖北省兴山县采集到1只食虫类标本。其体型较小(头体长 75.00 mm),通体呈棕褐色,尾较长(82.00 mm),眼细小。头骨扁平,较为坚固,齿尖具有浅红棕色色斑。通过测定其线粒体Cyt b基因序列,并结合缺齿鼩属6个物种的同源区序列,构建其系统发生关系,发现该标本与基因库中霍氏缺齿鼩(Chodsigoa hoffmanni)序列聚为具较高支持度的一支。综合形态学与系统发育学证据,将该标本鉴定为霍氏缺齿鼩。此次发现是湖北省境内该物种的首次记录,也是其在我国云南省及越南分布区外的又一发现,拓展了对该物种在我国分布范围的认识。

    Abstract:

    A shrew specimen which has not been recorded in Hubei Province before was collected Xingshan county, Hubei on December 2016. Morphologically it was grey and brown, with a head and body length of 75.00 mm, a relatively long tail (82.00 mm) and tiny eyes. Its cranium was flat and fairly solid and its teeth tips had light reddish-brown spots. Its species identity was established phylogenetically, based on the mitochondrial cytochrome b gene sequence, and combined with the homologous sequences of six other Chodsigoa species obtained from NCBI database. These individuals clustered with C. hoffmanni and combined into a monophyletic clade in the phylogenetic tree, with a closer genetic distance to C. hoffmanni than to any other species. On the basis of this morphological and phylogenetic evidence, this specimen was confirmed as a Hoffmann’s long-tailed shrew (C. hoffmanni). This species was also recorded formerly in Yunnan province, China and Vietnam. Our finding extended the previously known geographical range of this shrew species.

    参考文献
    Chen Z Z, He K, Huang C, et al. 2017. Integrative systematic analyses of the genus Chodsigoa (Mammalia: Eulipotyphla: Soricidae), with descriptions of new species. Zoological Journal of the Linnean Society, 180(3): 694–713. Drummond A J, Ashton B, Buxton S, et al. 2011. Geneious. version 8.0.1. Auckland, New Zealand. [CP/OL]. [2019-07-20] https:// www.geneious.com/download/previous-versions/. Edgar R C. 2004. MUSCLE: multiple sequence alignment with high accuracy and high throughput. Nucleic Acids Research, 32(5): 1792–1797. Posada D, Crandall K A. 1998. Modeltest: testing the model of DNA substitution. Bioinformatics, 14(9): 817–818. Tamura K, Stecher G, Peterson D, et al. 2013. MEGA 6: molecular evolutionary genetics analysis version 6.0. Molecular Biology and Evolution, 30(12): 2725–2729. 潘清华, 王应祥, 岩崑. 2007. 中国哺乳动物彩色图鉴. 北京: 中国林业出版社. 杨奇森, 夏霖, 冯祚建, 等. 2007. 兽类头骨测量标准Ⅴ: 食虫目、翼手目. 动物学杂志, 42(2): 56–62.
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雷博宇,崔继法,岳阳,吴楠,吉晟男,舒化伟,余文华,周友兵.2019.湖北兴山发现霍氏缺齿鼩.动物学杂志,54(6):820-824.

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  • 收稿日期:2019-08-08
  • 最后修改日期:2019-10-21
  • 录用日期:2019-10-18
  • 在线发布日期: 2019-12-10